Massac County RainfallUnited StatesILMassac County80%Metropolis 80% Chance 85%Brookport 85% Chance 75%Mermet Lake 75% Chance Big BayBoazBrookportCretaceous Hills Nature PreserveFort Massac State ParkHillermanJoppaMassac Forest Nature PreserveMermetMermet LakeMetropolisMetropolis Municipal AirportNew ColumbiaRound KnobSamothShady GroveUnionville